public static ThreadGroup getRootThreadGroup() {
if (rootThreadGroup != null) return rootThreadGroup;
ThreadGroup tg = Thread.currentThread().getThreadGroup();
ThreadGroup ptg;
while ((ptg = tg.getParent()) != null) tg = ptg;
return tg;
}
private void doShutdown(boolean force) {
long start = Clock.currentTimeMillis();
logger.finest("** we are being asked to shutdown when active = " + String.valueOf(active));
if (!force && isActive()) {
final int maxWaitSeconds = groupProperties.GRACEFUL_SHUTDOWN_MAX_WAIT.getInteger();
if (!partitionService.prepareToSafeShutdown(maxWaitSeconds, TimeUnit.SECONDS)) {
logger.warning(
"Graceful shutdown could not be completed in " + maxWaitSeconds + " seconds!");
}
}
if (isActive()) {
if (!force) {
clusterService.sendShutdownMessage();
}
// set the joined=false first so that
// threads do not process unnecessary
// events, such as remove address
joined.set(false);
setActive(false);
setMasterAddress(null);
try {
Runtime.getRuntime().removeShutdownHook(shutdownHookThread);
} catch (Throwable ignored) {
}
if (managementCenterService != null) {
managementCenterService.shutdown();
}
logger.finest("Shutting down client command service");
clientEngine.shutdown();
logger.finest("Shutting down node engine");
nodeEngine.shutdown();
if (multicastService != null) {
logger.finest("Shutting down multicast service");
multicastService.stop();
}
logger.finest("Shutting down connection manager");
connectionManager.shutdown();
textCommandService.stop();
masterAddress = null;
if (securityContext != null) {
securityContext.destroy();
}
initializer.destroy();
serializationService.destroy();
int numThreads = threadGroup.activeCount();
Thread[] threads = new Thread[numThreads * 2];
numThreads = threadGroup.enumerate(threads, false);
for (int i = 0; i < numThreads; i++) {
Thread thread = threads[i];
if (thread.isAlive()) {
logger.finest("Shutting down thread " + thread.getName());
thread.interrupt();
}
}
failedConnections.clear();
systemLogService.shutdown();
logger.info(
"Hazelcast Shutdown is completed in " + (Clock.currentTimeMillis() - start) + " ms.");
}
}
public static Thread[] getAllThreads() {
final ThreadGroup root = getRootThreadGroup();
final ThreadMXBean thbean = ManagementFactory.getThreadMXBean();
int nAlloc = thbean.getThreadCount();
int n = 0;
Thread[] threads;
do {
nAlloc *= 2;
threads = new Thread[nAlloc];
n = root.enumerate(threads, true);
} while (n == nAlloc);
return threads;
}